Originally Posted by rgsuspsa
The weld photographs depict weld regions which appear sound, and regions which appear quite poor. For any given weld joint the entire weld, both internal and external to the hull must be sound. I believe these welds are going to be problematic within a period of time which will be quite short of their intended service life. Either deal with them now, or someone will be dealing with them in the not too distant future.
Thanks for chiming in Ron. The collective knowledge of this forum is amazing. I've done quite a bit of reading over the past week regarding welding and have learned quite a bit. As always, I still have tons to learn.
The in the Weld Defects section of the MIG handbook it refers to porosity. As I understand it, the soot is indicative of porosity usually caused by unclean material or inadequate shield gas. With MIG welding it is often caused by "dragging" the weld instead of "pushing" it. Especially with 5000 series wire. The porosity may or may not be inside the joint, but the only way to tell is by x-ray. In practice, excessive sooting is a good indicator of porosity.
Let me know if I have that info right.
A lot of this has been stated in different ways by forum members. What amazes me is the "professionals" haven't mentioned this even if they have nothing to lose by saying "that there weld is a pile of crap!"
I appreciate everybody's input and hopefully I can return the information overload I'm receiving to the next new member.
Starboard side is removed and ready for welding. The outside weld is the most concerning to me. The inside hull welds seem adequate. As was stated by somebody else "grind it out and do it again!"